NCO- Cyber Olympiad (SOF) Class 7: Questions 140 - 143 of 422
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Question 140
Question MCQ▾
If and be any two rational numbers then we define:
Thus, subtracting a rational number means adding its additive inverse. Based on the statement given above solve the following Problem: Subtract from .
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 141
Question MCQ▾
Two positions of a dice are shown below. When there are 3 circles at the button, the number of circles at the button will be
Choices
Choice (4) | Response | |
---|---|---|
a. | 4 | |
b. | 5 | |
c. | 6 | |
d. | 1 |
Question 142
Question Match List-Ⅰ List-Ⅱ▾
Match the following.
List-Ⅰ | List-Ⅱ |
(A) Circumcenter | (i) The point at which the altitudes of a triangle meet |
(B) In Centre | (ii) The point at which the three angle bisectors of a triangle meet |
(C) Centroid | (iii) The point of intersection of the perpendicular of the sides of a triangle |
(D) Orthocenter | (iv) The point at which the medians of a triangle meet |
Choices
Choice (4) | Response | |
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a. |
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b. |
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c. |
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d. |
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Question 143
Question MCQ▾
A train 600 meters long is running at a speed of If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is.
Choices
Choice (4) | Response | |
---|---|---|
a. | 130 | |
b. | 360 | |
c. | 300 | |
d. | 500 |